Asomodai

So I require a Red torch for my up coming night battlesim, to preserve my natural night vision.

I don't want to spend money...

I took my torch (Which I made a bunch of new lenses out of roughly cut Chinese takeaway Tupperware boxes as the original plastic one broke) and coloured it in with permanent red marker. 

Seems to do the job. If I want to make it redder then I will put layers of clear Sellotape on the lense with a coating of red marker pen per layer.